I have a 92 240 and I have the se gagues cluster with the ele speedo goin from then ana to the digital . Well I have it all taken apart just dont know what wires go where ???? Or can I just take the harness out of the car that had the electric speedo and use it b\c it looks virtualy plug and play ????? Or Is there a special kit I will have to buy in order to have that on my car someone help me please ??